Constellium Ownership | Who Owns Constellium?

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Constellium Ownership Summary

Constellium is owned by 88.42% institutional investors, 3.02% insiders, and 8.56% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.46% of CSTM shares. Janus Henderson Contrarian D is the top mutual fund, with 2.91% of its assets in Constellium shares.

CSTM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Constellium	88.42%	3.02%	8.56%
Sector	Basic Materials Stocks	58.82%	12.62%	28.56%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	12.80M	9.46%	$408.01M
Blackrock	11.43M	7.79%	$215.44M
Bpifrance sa	8.40M	6.21%	$267.83M
Morgan stanley	6.18M	4.57%	$197.06M
American century companies	4.22M	3.12%	$134.52M
Vanguard group	4.05M	2.88%	$76.44M
T. rowe price investment management	2.98M	2.20%	$94.99M
State street	2.95M	2.18%	$94.17M
Arrowstreet capital, limited partnership	2.84M	2.10%	$90.66M
Nuveen	2.77M	2.05%	$88.31M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bpifrance sa	8.40M	19.67%	$267.83M
Brightline capital management	1.92M	13.28%	$61.29M
Mountaineer partners management	482.13K	11.64%	$15.37M
Beaconlight capital	779.90K	8.78%	$24.86M
Kailix advisors	278.20K	8.56%	$8.87M
Bayberry capital partners lp	655.00K	7.19%	$20.87M
Soapstone management	200.00K	4.64%	$6.37M
Beacon investment advisors	326.72K	3.27%	$10.41M
Encompass capital advisors	2.42M	2.75%	$77.17M
Rockingstone advisors	171.81K	2.20%	$5.48M

Top Buyers

Holder	Shares	% Assets	Change
Morgan stanley	6.18M	0.01%	2.99M
American century companies	4.22M	0.06%	2.14M
Blackrock	11.43M	0.00%	1.66M
Kinetic partners management, lp	2.54M	1.93%	1.23M
Senator investment group lp	1.08M	1.26%	1.08M

Top Sellers

Holder	Shares	% Assets	Change
Fmr	2.19M	0.00%	-4.77M
Bpifrance sa	8.40M	19.67%	-4.19M
Nut tree capital management, lp	-	-	-3.23M
Oberweis asset management inc/	-	-	-1.84M
Samlyn capital	-	-	-1.73M

New Positions

Holder	Shares	% Assets	Change	Value
Senator investment group lp	1.08M	1.26%	1.08M	$34.53M
Sixth street partners management company	734.25K	0.00%	734.25K	$23.40M
Hennessy advisors	294.50K	0.30%	294.50K	$9.39M
Neuberger berman group	237.31K	0.01%	237.31K	$7.56M
Bnp paribas asset management	131.89K	0.00%	131.89K	$4.20M

Sold Out

Holder	Change
Twin peaks wealth advisors	-4.00
Capital performance advisors llp	-7.00
Frazier financial advisors	-19.00
Southstate	-20.00
First horizon advisors	-20.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	394	22.74%	119,715,077	-3.71%	88	1.05%	259	29.50%	107	25.88%
Mar 31, 2026	219	-15.12%	67,731,701	-44.73%	48	0.64%	137	9.60%	56	-41.67%
Dec 31, 2025	193	-22.18%	72,832,493	-42.75%	51	0.63%	94	-32.37%	66	-4.35%
Sep 30, 2025	238	6.25%	127,175,966	1.31%	90	1.14%	135	0.75%	69	9.52%
Jun 30, 2025	229	-2.14%	130,590,895	0.80%	92	1.17%	136	6.25%	66	-1.49%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Janus Henderson Contrarian D	4.18M	2.91%	-
Janus Henderson US Opportunistic Alpha	4.18M	2.86%	321.95K
Janus Henderson Opportunistic Alpha MA	3.86M	2.64%	3.86M
iShares Russell 2000 ETF	3.44M	2.54%	-61.06K
T. Rowe Price U.S. SC Value Eq Tr-Z	3.42M	2.40%	187.37K
Avantis International Small Cap Val ETF	2.19M	1.62%	-
PGIM Jennison Small Company A	2.31M	1.58%	-
Jennison SMid Cap Core Equity	2.31M	1.58%	-41.76K
Janus Henderson US Small Cap Growth	2.18M	1.56%	-
Janus Henderson Venture D	2.18M	1.56%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 03, 2026	Deslarzes Jean-Christophe	-	Buy	$40.59K
Jun 04, 2026	Ormerod John	-	Sell	$280.08K
May 28, 2026	Becker Marcus	SVP CPO	Sell	$362.96K
May 14, 2026	Soultz Bradley Lee	-	Buy	$84.60K
May 14, 2026	Jarrett Martin	SVP Chief Innovation Officer	Sell	$157.80K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	1	-
2026 Q2	2	11
2026 Q1	4	15

CSTM Ownership FAQ

Who owns the most shares of Constellium?

Constellium’s largest shareholders are Blackrock funding, inc. /de (12.8M shares, 9.46%), Blackrock (11.43M shares, 7.79%), and Bpifrance sa (8.4M shares, 6.21%). Together, they hold 23.45% of Constellium’s total shares outstanding.

Does Blackrock own Constellium?

Yes, BlackRock owns 7.79% of Constellium, totaling 11.43M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 215.44M$. In the last quarter, BlackRock increased its holdings by 1.66M shares, a 17.00% change.

Who is Constellium’s biggest shareholder by percentage of total assets invested?

Bpifrance sa is Constellium’s biggest shareholder by percentage of total assets invested, with 19.67% of its assets in 8.4M Constellium shares, valued at 267.83M$.

Who is the top mutual fund holder of Constellium shares?

Janus Henderson Contrarian D is the top mutual fund holder of Constellium shares, with 2.91% of its total shares outstanding invested in 4.18M Constellium shares.

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